Corrected entry: Near the end of the film, in the scene where they return to the Indians' celebration, the Indian woman addresses Roy as Owen, the name of the actor who plays Roy in the film.
Corrected entry: In the Qing Dynasty which reigned China when the story was set, Chinese men, be it commoners or those in the palace, were all bald in the front and wore ponytails at the back. It's the same for Emperor or servants. Although Jackie Chan has a ponytail, why does he have hair in the front?
Corrected entry: Roy has a tattoo on his shoulder that is visible in the bath scene. It is a tattoo of a Chinese symbol. Although he is an enlightened man it seems unlikely.
Corrected entry: In the scene near the beginning when Jackie Chan is fighting Native Americans in the river, many of them are chubby. This indicates modern eating habits, rather than the hard-bodied physique that would be the natural result of Native American warriors on a hunter/gatherer diet in 1881.
Corrected entry: When the drunk is holding the bottle there is no cork in the neck of the bottle. Yet when the horse goes to pick the bottle up to drink from it there is a cork in the bottle.
Corrected entry: When Chon and Roy meet in the bar, the thing holding the cards on Roy's wrist starts to go back under his coat. Then there is a cut to someone else and back to Roy's hand, which still has the card holder sticking out.
Corrected entry: When Roy and Chon are about to be hung, Roy is shot down from his noose and lands in a coffin. There was only 1 coffin, even though they were both supposed to be hung and buried.